UDC2300
UDC2000 Series • Refrigeration Controller
Quick Info
Output Functions
1/4 DIN universal digital controller with microprocessor
Technical Specifications
Display & Interface
| Display Type | LED |
| Display Digits | 4 |
| Buttons | 5 |
| LED Indicators | Output 1, Output 2, Alarm 1, Alarm 2 |
Power Supply
| Voltage | 100-240V AC |
| Voltage Range | 90-264V AC |
| Frequency | 50/60Hz |
| Power Consumption | 12VA |
Sensor Inputs
| Probe Inputs | 1 |
| Probe Type | TC / RTD / mA / mV |
| Temp Range | -270 to 1820°C |
| Accuracy | ±0.1% |
Relay Outputs
| Relay Outputs | 2 |
| Relay Rating | 5A/250VAC |
Physical
| Panel Size | 96x96 mm |
| Depth | 150 mm |
| IP Rating | IP54 (front) |
| Weight | 500 g |
Operating Conditions
| Operating Temp | 0 to 55°C |
| Storage Temp | -40 to 85°C |
Wiring Terminals
| Terminal | Function | Type | Wire Color |
|---|---|---|---|
| L1 | Power L | Input |
brown
|
| L2 | Power N | Input |
blue
|
| 1 | Input + | Input |
red
|
| 2 | Input - | Input |
white
|
| 3 | Input Common | Input |
green
|
| O1 | Output 1 | Output |
black
|
| C1 | Output 1 COM | Output |
black
|
| O2 | Output 2 | Output |
red
|
| C2 | Output 2 COM | Output |
red
|
| A | RS485 A | Comm |
blue
|
| B | RS485 B | Comm |
yellow
|
Important: Always disconnect power before wiring. Verify terminal numbers with the actual controller label before connecting.
Parameter Settings
| Code | Parameter | Range | Default | Description |
|---|---|---|---|---|
| SP | Setpoint | Per input | 25 °C | Control setpoint |
| InP | Input Type | 0-20 | 5 | Sensor type |
| Cntl | Control | 0=Off, 1=PID, 2=On/Off | 1 | Control mode |
| Pb | Prop Band | 0 to 9999 | 50 | Proportional band |
| rSET | Reset | 0 to 9999 | 10 rpt/min | Integral action |
| rAtE | Rate | 0 to 10 | 0 min | Derivative action |
| AL1t | Alarm 1 Type | 0-7 | 0 | Alarm 1 mode |
| AL1 | Alarm 1 SP | Per input | 50 °C | Alarm 1 setpoint |
| Addr | Modbus Address | 1 to 247 | 1 | Network address |
Error Codes
Solution: Check sensor wiring
Solution: Check for shorts
Solution: Power cycle or replace
Solution: Recalibrate or replace
Frequently Asked Questions
Press and hold UP+DOWN for 5 seconds
AL1t: 0=High, 1=Low, 2=Deviation High, 3=Deviation Low, etc.
Alternative Models (Cross Reference)
Manufacturer Information
Brand: Honeywell
Country: USA